With wikis, you do not have to change your curriculum. The contect does not change - just the delivery.
Collaborative writing
Class newspaper
Story telling
Poetry
Correcting teacher samples of writing
Classroom Wikipedia
Brainstorming
Group Work
Literature circles
Virtual field trips: Have your students research far away places they would like to go on a field trip, and get them to share images and information about the location.
Collaboration between teachers
Student Portfolios – students can display and discuss their work with others. It is great for peer editing and peer feedback to help students improve their writing skills.
Brainstorm ideas for science fair projects
Fan clubs: Start fan clubs for your students’ favorite figures from history and ask them to contribute their favorite quotes, photos, and other tidbits together.
Create an on-line text for a subject or content area
Wiki in the Classroom